Force-feed lubricator.



E. TILSTON.

- FORGE FEED LUBRIGATOR.

APPLIOATION FILED APR. 28, 1906. l 94m 1 99m Patented F610. 1L, 1910.

2 SHEETS-SHEET 1.

WMM/17,3066 I 2 SHEETS-SHEET 2.

FORCE-FEED LBRICATOR.

Specification of Lett-ers Patent.

Patented lFeb. 2li, 11,9210.

Application tiled April 28, 1906. Serial No. 314,296.

To all whom it may concern:

Be it known that l', EDWARD TiLs'roN, a

subject of the ling of Great Britain, residing in Manchester, county ofiiancaster, `England, have invented certain new and useful Improvementsin Force-Feed Lubricators, of which the following is a specification.

This invention aims to provide an improved force feed lubricator of thetype in which a lubricant pump actuated by the part to be lubricated isemployed; and with this end in view the invention consists in the novelfeatures of construction and combinations of parts to be hereinafterdescribed und claimed.

ln the accompanying drawing, Figure l is a vertical longitudinal sectionof a force feed lubricator constructed .in accordance with theinvention, Fig. 2 is a section ou line 2, 2, Fig. l. Fig. 3 is asectional view taken on the line 3, 3, of Fig. l.

Referring to the drawing, the shaft A, which is to be lubricated,rotates in a bearing B, which is preferably formed of the usual brasses,these being mounted in a casing C, which incloses the entire bearing andis provided at the ends with paclings E to prevent the escape of thelubricant along the shaft.

The casing C is formed with a transversely extending chamber D at eachend, and these chambers are in communication with each other by means ofa longitudinal channel F which extends directly beneath the bearing B,as shown. Gperating in a bore at the lower part of one of the chambers Dis an oil pump G adapted to pump the oil which is placed in the casingto the bearing and shaft, and preferably consisting of a thimble orsleeve closed at the top and provided with a sideopening G1 adapted tobe moved into and out of the pumpbarrel formed by said bore. Thismovement of the oil pump is produced by an eccentric I fixed to theshaft in any suitable manner within the same chamber D in which the oilpump is located, and engaging the upper end of the pump-sleeve, asshown. Said sleeve is returned after its depression by the eccentric bymeans of a helical'spring l-I located within the sleeve and seatedagainst a screw-plug N screwed in the mouth of the bore or pump-barrel.TvVhere the sleeve forms contact with the eccentric the former isprovided with a shoulder GX engaging the rotative movement of saidsleeve in the pump-barrel. The lower part of the pumpbarrel or bore isconnected by means of a passage Z with the bearing B in order to conductoil to said bearing, and said passage is preferably formed of a boreextending directly through the casing and bearing from the lower partofthe pump-barrel to a point in the bearing un der the shaft.

The rotation of the shaft produces, through the rotation of theeccentric I, the reciprocation of the pump-sleeve or thimble, the latterbeing maintained in engagement with the eccentric by means of the springH, as will be understood. The oil which is contained in the lower partof the casing and, more specifically, in the longitudinal channel Ftaken through the side-opening Gr1 of the pump and driven through thepassage Z to the lower part of the bearing, where it spreads itself overthe entire bearing surface of the bearing and shaft. The oil then findsits way downward at the sides of the bearing and back into thelongitudinal channel. F and chambers D, whence it is again pumped backto the bearing surfaces just indicated. This operation is repeated aslong as the shaft rotates, and of course the speed of the shaft controlsthe operation of the pump and therefore the amount of lubrication.

What I claim is l. In a force feed lubricator for bearings, thecombination, with a shaft and a bearing therefor, of a casing inclosingthe bearing and provided at the ends of the latter with chambers formingoil-collecting chambers, said chambers being connected by means of achannel extending longitudinally below the bearing, a pump-barrel formedby a bore in the casing communicating at its upper part with one of saidchambers and said longitudinal channel, a pump piston operating in saidbarrel, pump-actuating means mounted on the shaft within said last-namedchamber, and a passage leading directly through the casing and thebearing from the lower part of said pump-barrel to a point in thebearing under the shaft.

2. In a force feed lubricator the combination, therefor',

for bearings, with a shaft and a bearmg of a casing inclosmg the bearingand provided at the ends of the latter with chambers formingoil-collecting chambers, said chambers being connected by means ofside-face of the eccentric and preventing the i a Channel extendinglongit-L'idinally below the bearing, a pump-barrel formed by .a bore inthe casing communicating at its upper part with one of said Chambers andsaid longitudinal channel, a pump piston operating in said barrel andcomprising a thimhle having 'a side-opening adapted to be moved into andout of said pump-barrel, pump-actuating means mounted on the shaltwithinsaid last-named chamber, and a passage leading" directly through thecasing and the bearing from the lower part ot' said pumpha-rrel to apoint in the bearing under the shaft.

3. In a force feed lubrioator for hearings,

the combination, with a shaft and a hearing therefor, of a casinginclosing the bearing and provided at the ends of the latter with lChambers forming oil-collecting chambers, l said chambers beingconnected by means of a channel extending longitudinally below l thehearing, a pump-barrel ormed'by a bore in the casing communicating atits upper part Witlrone of said chambers and said longitudinal channel,a pump piston operating in said barrel and Comprising a thimble havingay side-opening adapted to be moved into and out of register with thesaid last-named Chamber, pump-actuating means mounted on the shaftWithin said last-named chamber7 and a passage leading directly throughthe easing and the bearing from the lower parl of said pump-barrel to a`point in the hearing under the shalt, substantially as set forth.

In Witness whereof I have hereunto set my hand in presence of twoWitnesses.

EDWARD TILHIUN.

lVil-,nesses H. D. JAMEsoN, Fnnmi. L. RAND.

